Once a rockstar, always a rockstar.
Dr. Cumming's idea of on-table ultrasound is reminiscent of the use of IVUS itself, they've already got one set of images with the xray as part of the procedure but a second set gives more information. It would be a third set if a doctor does all three.
phlebologist has seen one case of true agenesia! This addresses a question from last May, when there was a mismatch of people here at TIMS reporting that they had been diagnosed with a missing jugulars but none of the investigators had seen such cases and perhaps we were being misdiagnosed as having no jugular when it was merely a hyperplastic or difficult jugular to find.
(found the earlier conversation on this: http://www.thisisms.com/ftopicp-109202.html#109202
That was a hard find, it took ten minutes!) What I take from this is that true agenesia is possible but very very rare, so if you've been told you have a missing jugular, it is worth getting a second look.